1//===- NativeSymbolEnumerator.cpp - info about enumerators ------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/DebugInfo/PDB/Native/NativeSymbolEnumerator.h"
10
11#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
12#include "llvm/DebugInfo/PDB/Native/NativeTypeBuiltin.h"
13#include "llvm/DebugInfo/PDB/Native/NativeTypeEnum.h"
14
15using namespace llvm;
16using namespace llvm::codeview;
17using namespace llvm::pdb;
18
19NativeSymbolEnumerator::NativeSymbolEnumerator(
20    NativeSession &Session, SymIndexId Id, const NativeTypeEnum &Parent,
21    codeview::EnumeratorRecord Record)
22    : NativeRawSymbol(Session, PDB_SymType::Data, Id), Parent(Parent),
23      Record(std::move(Record)) {}
24
25NativeSymbolEnumerator::~NativeSymbolEnumerator() {}
26
27void NativeSymbolEnumerator::dump(raw_ostream &OS, int Indent,
28                                  PdbSymbolIdField ShowIdFields,
29                                  PdbSymbolIdField RecurseIdFields) const {
30  NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
31  dumpSymbolIdField(OS, "classParentId", getClassParentId(), Indent, Session,
32                    PdbSymbolIdField::ClassParent, ShowIdFields,
33                    RecurseIdFields);
34  dumpSymbolIdField(OS, "lexicalParentId", getLexicalParentId(), Indent,
35                    Session, PdbSymbolIdField::LexicalParent, ShowIdFields,
36                    RecurseIdFields);
37  dumpSymbolField(OS, "name", getName(), Indent);
38  dumpSymbolIdField(OS, "typeId", getTypeId(), Indent, Session,
39                    PdbSymbolIdField::Type, ShowIdFields, RecurseIdFields);
40  dumpSymbolField(OS, "dataKind", getDataKind(), Indent);
41  dumpSymbolField(OS, "locationType", getLocationType(), Indent);
42  dumpSymbolField(OS, "constType", isConstType(), Indent);
43  dumpSymbolField(OS, "unalignedType", isUnalignedType(), Indent);
44  dumpSymbolField(OS, "volatileType", isVolatileType(), Indent);
45  dumpSymbolField(OS, "value", getValue(), Indent);
46}
47
48SymIndexId NativeSymbolEnumerator::getClassParentId() const {
49  return Parent.getSymIndexId();
50}
51
52SymIndexId NativeSymbolEnumerator::getLexicalParentId() const { return 0; }
53
54std::string NativeSymbolEnumerator::getName() const { return Record.Name; }
55
56SymIndexId NativeSymbolEnumerator::getTypeId() const {
57  return Parent.getTypeId();
58}
59
60PDB_DataKind NativeSymbolEnumerator::getDataKind() const {
61  return PDB_DataKind::Constant;
62}
63
64PDB_LocType NativeSymbolEnumerator::getLocationType() const {
65  return PDB_LocType::Constant;
66}
67
68bool NativeSymbolEnumerator::isConstType() const { return false; }
69
70bool NativeSymbolEnumerator::isVolatileType() const { return false; }
71
72bool NativeSymbolEnumerator::isUnalignedType() const { return false; }
73
74Variant NativeSymbolEnumerator::getValue() const {
75  const NativeTypeBuiltin &BT = Parent.getUnderlyingBuiltinType();
76
77  switch (BT.getBuiltinType()) {
78  case PDB_BuiltinType::Int:
79  case PDB_BuiltinType::Long:
80  case PDB_BuiltinType::Char: {
81    assert(Record.Value.isSignedIntN(BT.getLength() * 8));
82    int64_t N = Record.Value.getSExtValue();
83    switch (BT.getLength()) {
84    case 1:
85      return Variant{static_cast<int8_t>(N)};
86    case 2:
87      return Variant{static_cast<int16_t>(N)};
88    case 4:
89      return Variant{static_cast<int32_t>(N)};
90    case 8:
91      return Variant{static_cast<int64_t>(N)};
92    }
93    break;
94  }
95  case PDB_BuiltinType::UInt:
96  case PDB_BuiltinType::ULong: {
97    assert(Record.Value.isIntN(BT.getLength() * 8));
98    uint64_t U = Record.Value.getZExtValue();
99    switch (BT.getLength()) {
100    case 1:
101      return Variant{static_cast<uint8_t>(U)};
102    case 2:
103      return Variant{static_cast<uint16_t>(U)};
104    case 4:
105      return Variant{static_cast<uint32_t>(U)};
106    case 8:
107      return Variant{static_cast<uint64_t>(U)};
108    }
109    break;
110  }
111  case PDB_BuiltinType::Bool: {
112    assert(Record.Value.isIntN(BT.getLength() * 8));
113    uint64_t U = Record.Value.getZExtValue();
114    return Variant{static_cast<bool>(U)};
115  }
116  default:
117    assert(false && "Invalid enumeration type");
118    break;
119  }
120
121  return Variant{Record.Value.getSExtValue()};
122}
123